<?php
header("Content-type:text/html;charset=UTF-8");
include_once ("untils/conn.php");
if(count($_POST["chk"])<= 0){
    echo "<script>alert('请选择记录');history.go(-1);</script>";
}else{


    for($i=0;$i<count($_POST["chk"]);$i++){
        //for语句循环读取复选框提交的值，
        $sql = "delete from studentinfo where id=".$_POST["chk"][$i];

        mysqli_query($con,$sql);
    }

    echo "<script>alert('删除成功');location.href='index.php';</script>";


}
?>